Bug: "admin" is allowed on NamedTab type, but its value is ignored & NamedTab always included

Hi Team Payload,

It appears that while "admin" is allowed on a NamedTab type, that its value gets ignored.

If this is better meant as an issue, happy to delete and repost.

For reference:

• NamedTab type below shows that "admin" property is included from union w/ FieldBase

  • export declare type NamedTab = TabBase & FieldBase;

• Here's a snapshot of what I'm trying to do — dynamically include the relevant tabs based on a enumerated layout property

  • 

• Results = still present even with always false value

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